3 Electrical switch & relay parts are listed for the 2020 BMW 330E, in 3 part types, covering the 2.0L L4 ELECTRIC/GAS Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2020 BMW 330E, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches. All 3 listed parts are A/C Refrigerant Pressure Switch (1 part), Brake Light Switch (1 part) and Turn Signal Switch (1 part).
The 2020 BMW 330E came with a single engine, the 2.0L L4 ELECTRIC/GAS Turbocharged, and every part is verified against it.
2 brands supply electrical switch & relay parts for the 2020 BMW 330E, led by WELLS (2 parts) and FOUR SEASONS (1 part).
Each part number listed for the 2020 BMW 330E opens a page with every vehicle that part fits.
A/C Refrigerant Pressure Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FOUR SEASONS | 20997 | 🇲🇽 MX | Pressure Switch | View on Amazon |
This table covers the pressure switches on the A/C circuit. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 2020 BMW 330E — FOUR SEASONS 20997.
Brake Light Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S12667 | 🇲🇽 MX | View on Amazon |
This table covers the pedal-mounted switch that turns on the brake lamps. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 2020 BMW 330E — WELLS 1S12667.
Turn Signal Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1S17937 | 🇲🇽 MX | View on Amazon |
This table covers the combination / turn-signal switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
One part is listed for the 2020 BMW 330E — WELLS 1S17937.
Buying Electrical Switch & Relay Parts for a 2020 BMW 330E
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- Confirm you have the 2.0L L4 ELECTRIC/GAS Turbocharged engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: A/C Refrigerant Pressure Switch and Brake Light Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2020 BMW 330E?
Our catalog currently lists 3 electrical switch & relay parts for the 2020 BMW 330E across 3 subcategories and 2 brands, covering the 2.0L L4 ELECTRIC/GAS Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical switch & relay problems on a 2020 BMW 330E?
Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2020 BMW 330E was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2020 BMW 330E?
Every part on this page is matched to the 2.0L L4 ELECTRIC/GAS Turbocharged engine. Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2020 BMW 330E
Electrical Switch & Relay Parts for Other BMW 330E Years
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